Business Segment Information (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Segment Reporting Information [Line Items]
First year acquisition accounting charges related to inventory	$ 30
Backlog amortization	7
Net sales	4,039	$ 3,674	$ 10,829	$ 10,590
Earnings before income taxes	621	656	1,650	1,642
Increase (decrease) in incentive stock compensation expense	8		(35)
Acquisition/divestiture costs	13		34
Dumping Duties Received		18
Automation Solutions [Member] \| Measurement & Analytical Instrumentation [Member]
Segment Reporting Information [Line Items]
Net sales	744	747	2,162	2,270
Automation Solutions [Member] \| Valves, Actuators & Regulators [Member]
Segment Reporting Information [Line Items]
Net sales	772	522	1,718	1,552
Automation Solutions [Member] \| Industrial Solutions [Member]
Segment Reporting Information [Line Items]
Net sales	430	403	1,216	1,186
Automation Solutions [Member] \| Process Control Systems & Solutions [Member]
Segment Reporting Information [Line Items]
Net sales	494	504	1,428	1,524
Operating Segments [Member] \| Automation Solutions [Member]
Segment Reporting Information [Line Items]
Net sales	2,440	2,176	6,524	6,532
Earnings before income taxes	378	354	1,032	1,037
Operating Segments [Member] \| Commercial & Residential Solutions [Member]
Segment Reporting Information [Line Items]
Net sales	1,602	1,501	4,314	4,066
Earnings before income taxes	402	384	996	920
Operating Segments [Member] \| Tools & Home Products [Member]
Segment Reporting Information [Line Items]
Net sales	415	400	1,210	1,186
Earnings before income taxes	97	97	281	274
Operating Segments [Member] \| Climate Technologies [Member]
Segment Reporting Information [Line Items]
Net sales	1,187	1,101	3,104	2,880
Earnings before income taxes	305	287	715	646
Differences in accounting methods [Member]
Segment Reporting Information [Line Items]
Earnings before income taxes	38	47	106	138
Corporate and other [Member]
Segment Reporting Information [Line Items]
Earnings before income taxes	(158)	(83)	(358)	(314)
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Net sales	(3)	(3)	(9)	(8)
Earnings before income taxes	$ (39)	$ (46)	$ (126)	$ (139)

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Amount of amortization of unfilled orders recognized in the income statement related to acquisition.

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Payments received related to dumping duties collected by U.S. Customs for 2006 through 2010 under the U.S. Continued Dumping and Subsidy Offset Act.

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First year acquisition accounting charges related to inventory

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Increase (decrease) in incentive stock compensation expense.

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Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

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